Woodworking-tool.



J. T. McCANN & W. H. ROBERTS.

WOODWORKING TOOL.-

APPLICATION FILED 0cT.5, 191s.

Patented Mar. 6, 1917.

2 SHEETS-SHEET I w r e M 3 H J. T. McCANN 61 W. H. ROBERTS.

wooowonxme TOOL. APPLICATION FILED OCT. 5. I916.

Patented Mar. 6,1917.

2 SHEETS-SHEET 2 ES PATENT OFFICE.

woDWonKIne-roor..

-Specification of Letters Patent.

, Application filed October 5, 1916. Serial No. 133,35

To all whom it may concern:

Be it known that we, Q AMES T. MGCANN and WILLIAM H. ROBERTS, citizensof the United States, residing at Tuolumne, in the county of Tuolumne and State of California, have invented certainnew and useful Improvements in lVoOdworking-Tools; and We do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

Our invention aims to provide a simply constructed yet efficient tool: convertible for a number of uses, the device being soconstructed as to permit it to be employed as a draw knife, a molding former, a hack-saw, or a brace for holding drills and the like.

With thefo'regoing general object in view,

the invention residesincertain novel features of construction and fin unique combinations of parts to be hereinafter fully described and claimed, the descriptive matter being supplemented by the accompanying drawings which, oonstitute a part of this application, and in which:

Figure 1 is an; elevation partly section of the imp'rovedtool assembledas a draw knife;

Figs. planes of the lines 2-2and' of Fig. 1;

Fig. 4 is an end elevation;

Fig. 5 is a perspective view .oftheback bar; Y

Figs. 6, 7, 8, and 9 are perspective views of different types of blades which may be used in connection with said back bar;-

Fig. is an elevation partly in section showing the device converted for use as a brace;

Fig. 11 is a transverse section on the plane of the line 11-11 of Fig. 10; and V Fig. 12 is a side elevation showing the manner in which the back bar and the handle attaching shanks thereof may be used as a hack-saw frame.

In the drawings, the numeral 1 designates a back bar which may be of any suitable length, the ends of said bar being preferably of cylindrical formation asshown at 2 and provided on. their extremitles with flat ears 3 which. are straddled by the forked ends of a pair of handle attaching shanks 4, these shanks being pivoted to the ears by means of rivets or the like 5.

The front edge of bar 1 has formed there- 2 and 3 are transverse. sections on the in a longitudinal dovetail groove 6 adapted torecei've a dovetail ribf7jlon any ofothe blades shown in Figs. 6,7, 8, andi9. ,In Fig. 6 a blade 8 is illustrated to be used as an, ordinary draw knife,; th is blade having in its rib? a pair. ofnotches 9 which when the. blade is in use ,aline with notches 10 in the. front edge of the backbarjl, keys 11 being adapted to be driven into the registering notches to prevent longitudinal shifting of the blade 8. n i

The blades 8*, 8 and 8 illustrated respectively in Figs/7,, 8, and: 9, are shaped for forming different kinds of work and any of these blades may be used at ,will in connection with the back bar ,1. It is necessary, however, when applyingthe. blades to said bar to swing at leastv one of the shanks 4 into aline'ment with said bar in order that the rib? mayb'e passed endwise' into the groove 6. The shanks 4, however, are normally held in right angular relation with the bar 1, by means. of dogs 12 which are carried by the shanks, said dogs engaging notches 13; in the i rounded ,o'uter ends ofthe ears 3.

.Suitablyshaped. handles 14 have formed therethrough longitudinal bores 15,0ne end of said bores receivingtherein.thejshanks 4, saidha ldlesand shankshaving alined pin holes through which removable pins 16 are passed, to holdthe handles/in position. When the handles,14 are removed, the pins l6 and the pinholes through the shanks 4 serve, to secure the oppositetends of a hack saw blade or'the like 17 to the shanks 4, whereby the latter and the bar 1 constitute .a frame for said blade, as depicted in Fig. 12.

The ends of the bores opposite those into which the shanks 4 project, receive therein attaching shanks 18 and'19 respectively of right angular handle and chuck members 20 and 21 which are shaped similarly to the upper handle and chuck of an ordinary brace used for drilling purposes and the like. The shanks 18 and 19 are held within the bores 15 by means of removable pins 22 and the addition of the parts 20 and 21 to those designated by the numerals 1, 4, and 14 therefore forms an effective brace when an intermediate operating handle 23 is applied around the center of the bar 1.

As depicted clearly in Figs. 10 and 11, the handle 23 consists of two substantially semi-cylindrical sections hinged together along one edge at 24 and detachably con- Paen d'tia,6,-19

nected by means of spring fingers25 at their opposite edges, the ends of said handle having inwardly extending annular flanges 26 which are adapted for reception in the notches 10 and in other notches 10 formed in the rear edge of the back bar 1.

The chuck member 21 may be of any suitable type but it preferably includes a ratchet 27 and its jaws 28 are by preference constructed approximately as shown in Fig. 10.

By constructing the improved tool in the manner shown and described it will be obvious that although it is rather simple, it may be employed to equal advantage for a wide range of uses. Particular emphasis is laid upon the fact that the notches 10 serve the twofold function of receiving the keys 11 to hold the blades in place upon the back bar, and receiving the flanges 26 of the handle 23 to prevent longitudinal shifting of said handle. Hinging the shanks 4: to the ends of the back bar 1 is also considered a rather unique feature since it permits endwise insertion of the numerous blades regardless of the length thereof. The pin holes and pins 16 are rather important in view of the fact that they serve the twofold function of fastening the handle lt to the tool and securing the ends of the blade 17 thereto.

On account of the advantages above pointed out the construction shown and described constitutes the preferred form of our device, but it is to be understood that within the scope of the invention as claimed numerous changes may be made without sacrificing the principal advantages thereof.

We claim:

1. A compound tool providing the essential elements of a draw knife, a saw frame-and a bit brace and comprising a bar adapted to serve as the blade carrying member of the draw knife, as the back bar of the saw frame and the mid-crank portion of the brace, a

Copies of this patent may be obtained for five cents each, by

pair of arms extending laterally in the same direction from the ends of said bar and adapted to form the ends of the saw frame, sleeves adapted to serve as hand holds secured detachably to said arms and forming therewith the handles for the draw knife, a brace handle, a brace chuck, and shanks extending laterally from said handle and chuck and secured detachably to the aforesaid hand holds, the latter, the aforesaid arms and the shanks forming the cranks of the bit brace.

2. A compound tool providing the essential elements of a draw knife, a saw frame and a bit brace and comprising a bar adapted to serve as the blade carrying member of the draw knife, as the back bar of the saw frame and as the mid-crank portion of the brace, a pair of arms extending laterally in the same direction from the ends of said bar and adapted to form the ends of the saw frame, said arms having openings to receive saw attaching pins, sleeves adapted to serve as hand holds and receiving said arms in one end, pins passable through said sleeves and said openings of the arms to connect said arms and sleeves to permit the latter to serve as handles for the draw knife, a brace handle, a brace chuck, shanks extending laterallyfrom said handle and chuck and receivable in the other ends of said sleeves, and means detachably connecting said shanks and sleeves, whereby the latter, said shanks and the aforesaid arms may form the cranks for the brace.

In testimony whereof we have hereunto set our hands in the presence of two subscribing witnesses.

JAMES T. MOCANN. WILLIAM H. ROBERTS.

Witnesses:

JOHN LovE, IvAR EKMAN.

addressing the Commissioner of Patents Washington, .D. G. 

